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Business Bank Account

A business bank account is a deposit account held in a business's name and used only for business money, kept separate from the owner's personal accounts. The separation protects clean bookkeeping and, for an LLC or corporation, the liability shield.

Last reviewed by Steven Fox, CFP®, EA on

Quick Summary

  • A business bank account holds a business's money under its own name, apart from the owner's personal funds.
  • Keeping business and personal money separate makes bookkeeping, taxes, and audits far simpler.
  • For an LLC or corporation, mixing personal and business money is one of the things a court weighs when deciding whether to set aside the owner's liability protection.
  • Opening one usually requires business formation documents and, for many businesses, an EIN.

Definition

A business bank account is a checking or savings account opened in the name of a business rather than an individual, used to receive the business's income and pay its expenses. Its purpose is separation: keeping the business's money in its own account, distinct from the owner's personal finances. That separation is not merely tidy. It underpins clean books, simpler taxes, and, for a business organized as an LLC or corporation, the legal protection that keeps the owner's personal assets out of reach of business creditors.

Advanced Explanation

The core reason to hold business money in its own account is that mixing business and personal funds, called commingling, creates two distinct problems. The first is practical: when personal and business transactions run through the same account, sorting deductible business expenses from personal spending becomes slow and error-prone, and a tax audit is far harder to survive because the records do not draw a clean line. A separate account makes the business's income and expenses self-documenting.

The second problem is legal, and it applies to owners who formed an LLC or a corporation to shield their personal assets. That shield is not automatic in practice: if the owner treats the business's money as their own, a creditor can argue that the business is not truly separate from the owner and ask a court to disregard the entity and reach the owner personally. Commingling funds is one of the factors courts weigh in that argument. A business bank account is the most basic step in maintaining the separation that keeps the protection intact. A sole proprietor has no such shield to protect, since the owner and the business are already one and the same, but a separate account still earns its keep on the bookkeeping side alone.

Opening an account generally requires proof of the business's existence and identity. What a bank asks for depends on the structure: a sole proprietor may open one with a Social Security number or an EIN, while an LLC or corporation is typically asked for its formation documents and an employer identification number. A business needs an EIN in several situations regardless of banking, for instance once it has employees or sets up a qualified retirement plan, and banks often require one to open a business account even when the tax code would not.

Used in a Sentence

“As soon as the freelance income started arriving regularly, he opened a business bank account so his consulting revenue and expenses no longer ran through the same checking account as his groceries.”

How It Works

Consider a sole proprietor who runs a small photography business, using a hypothetical setup. She opens a business checking account under her business name, using an EIN she requested for the purpose. From then on, every client payment is deposited into that account and every business cost, camera gear, editing software, mileage reimbursements to herself, is paid from it. When she wants to take money out for personal use, she transfers it to her personal account as an owner's draw rather than spending directly from the business account.

At tax time, her bookkeeper can build the year's profit-and-loss statement almost entirely from the business account's statements, because the account contains business activity and nothing else. Had she run the business through her personal checking account, the same task would mean combing hundreds of mixed transactions to separate the deductible ones, and any figure she reported would be harder to defend.

Pros and Cons

Pros

  • Makes bookkeeping, taxes, and audits far simpler by keeping business activity in one place.
  • Helps preserve the liability protection of an LLC or corporation by keeping business and personal money separate.
  • Presents a professional face: clients can pay the business rather than an individual.
  • Can unlock business banking features such as merchant services, business credit, and multiple authorized users.

Cons

  • Business accounts often carry monthly fees, minimum-balance requirements, or transaction limits that personal accounts do not.
  • Opening one requires paperwork, typically formation documents and often an EIN.
  • It is one more account to reconcile and manage.

People Also Asked

Answers to the most frequently asked questions.

Do I legally need a separate business bank account?
A sole proprietor is not legally required to have one, though it is strongly advisable for clean records. An LLC or corporation has no absolute legal requirement either, but keeping business and personal money separate is important to preserving the entity's liability protection, so in practice a separate account is close to essential.
What do I need to open a business bank account?
It depends on the business structure. A sole proprietor may be able to open one with a Social Security number or an EIN, while an LLC or corporation is usually asked for its formation documents and an employer identification number. Banks also require the usual personal identification for the people authorized on the account.
Can I just use my personal account for my business?
You can when starting out, but it creates problems. Mixing business and personal transactions makes bookkeeping and taxes much harder and weakens the liability protection of an LLC or corporation, because it blurs the line between the owner and the business. A separate account avoids both issues.
Does opening a business bank account require an EIN?
Not always for a sole proprietor, who may use a Social Security number, but many banks require an EIN to open a business account, and an LLC or corporation will generally need one. A business also needs an EIN in certain situations regardless of banking, such as having employees or a qualified retirement plan.

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